Mr Oliver captioned the photo: 'Gourmet Vegemite on toast. This is just ridiculous! Tasty but ridiculous'

The picture has since gone viral with commentators both praising and ridiculing the unusual serving in equal measure.

FEMAIL spoke to Core Espresso employee, Danny Kerr, who said, 'We weren't expecting this response at all to be honest. We've been serving that for a long time, we don't always serve it like that and I'd never thought about it before now,' she said.

'We tried to make it look fancy and it doesn't because it's just Vegemite.

'We're definitely not a pretentious cafe, it's just $7 toast with condiment on the side. I think it's hilarious.'